182 lines
3.4 KiB
PHP
182 lines
3.4 KiB
PHP
<?php
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/**
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* PrivateBin
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*
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* a zero-knowledge paste bin
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*
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* @link https://github.com/PrivateBin/PrivateBin
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* @copyright 2012 Sébastien SAUVAGE (sebsauvage.net)
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* @license https://www.opensource.org/licenses/zlib-license.php The zlib/libpng License
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* @version 1.2.1
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*/
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namespace PrivateBin\Model;
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use Exception;
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use PrivateBin\Configuration;
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use PrivateBin\Data\AbstractData;
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/**
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* AbstractModel
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*
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* Abstract model for PrivateBin objects.
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*/
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abstract class AbstractModel
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{
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/**
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* Instance ID.
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*
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* @access protected
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* @var string
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*/
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protected $_id = '';
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/**
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* Instance data.
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*
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* @access protected
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* @var array
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*/
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protected $_data = array('meta' => array());
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/**
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* Configuration.
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*
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* @access protected
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* @var Configuration
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*/
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protected $_conf;
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/**
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* Data storage.
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*
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* @access protected
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* @var AbstractData
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*/
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protected $_store;
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/**
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* Instance constructor.
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*
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* @access public
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* @param Configuration $configuration
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* @param AbstractData $storage
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*/
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public function __construct(Configuration $configuration, AbstractData $storage)
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{
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$this->_conf = $configuration;
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$this->_store = $storage;
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}
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/**
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* Get ID.
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*
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* @access public
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* @return string
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*/
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public function getId()
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{
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return $this->_id;
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}
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/**
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* Set ID.
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*
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* @access public
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* @param string $id
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* @throws Exception
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*/
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public function setId($id)
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{
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if (!self::isValidId($id)) {
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throw new Exception('Invalid paste ID.', 60);
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}
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$this->_id = $id;
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}
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/**
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* Set data and recalculate ID.
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*
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* @access public
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* @param array $data
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* @throws Exception
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*/
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public function setData(array $data)
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{
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$data = $this->_sanitize($data);
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$this->_validate($data);
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$this->_data = $data;
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// calculate a 64 bit checksum to avoid collisions
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$this->setId(hash(version_compare(PHP_VERSION, '5.6', '<') ? 'fnv164' : 'fnv1a64', $data['ct']));
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}
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/**
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* Get instance data.
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*
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* @access public
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* @return array
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*/
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public function get()
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{
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return $this->_data;
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}
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/**
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* Store the instance's data.
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*
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* @access public
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* @throws Exception
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*/
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abstract public function store();
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/**
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* Delete the current instance.
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*
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* @access public
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* @throws Exception
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*/
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abstract public function delete();
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/**
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* Test if current instance exists in store.
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*
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* @access public
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* @return bool
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*/
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abstract public function exists();
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/**
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* Validate ID.
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*
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* @access public
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* @static
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* @param string $id
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* @return bool
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*/
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public static function isValidId($id)
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{
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return (bool) preg_match('#\A[a-f\d]{16}\z#', (string) $id);
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}
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/**
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* Sanitizes data to conform with current configuration.
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*
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* @access protected
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* @param array $data
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* @return array
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*/
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abstract protected function _sanitize(array $data);
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/**
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* Validate data.
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*
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* @access protected
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* @param array $data
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* @throws Exception
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*/
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protected function _validate(array $data)
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{
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}
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}
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